Transmitting device, transmitting method, receiving device, and receiving method
AssigneeSaturn Licensing LLC
InventorIkuo Tsukagoshi
Life of this patent
Estimating the term…
Abstract
Display with an appropriate luminance dynamic range is realizable on a receiving side. A gamma curve is applied to input video data having a level range from 0% to 100%*N (N: a number larger than 1) to obtain transmission video data. This transmission video data is transmitted together with auxiliary information used for converting a high-luminance level on the receiving side. A high-level side level range of the transmission video data is converted on the receiving side such that a maximum level becomes a predetermined level based on the auxiliary information received together with the transmission video data.
Claims20
A receiving device comprising:
- circuitry configured to
- receive transmission video data obtained by applying a gamma curve to input video data corresponding to a level range from 0% to 100%*N;
- execute a conversion process on the transmission video data based on conversion curve information received together with the transmission video data to obtain converted video data in which the conversion curve information includes a curve type indicating a type of a conversion curve from a plurality of types of conversion curves;
- and
- convert a high-level side level range of the transmission video data such that a maximum luminance value of the converted video data becomes a predetermined level based on auxiliary information received together with the transmission video data;
- and
- a display having a luminance dynamic range that is determinable based on EDID of the display through HDMI;
- wherein said auxiliary information includes a data field defining a maximum luminance value of the received transmission video data by including information of a value of said N and N is greater than 1.
A display unit comprising:
- circuitry configured to
- receive transmission video data obtained by applying a gamma curve to input video data having a first luminance value range from a low luminance value to a first high luminance value, the transmission video data having a second luminance value range corresponding to a level range from 0% to 100%*N, from the low luminance value to a second high luminance value having a smaller value than the first high luminance value;
- execute a conversion process on the transmission video data based on conversion curve information received together with the transmission video data to obtain converted video data in which the conversion curve information includes a curve type indicating a type of a conversion curve from a plurality of types of conversion curves;
- and
- convert luminance values of the transmission video data to increase a maximum luminance value of the transmission video data based on auxiliary information received together with the transmission video data,
- wherein said auxiliary information includes a data field defining the maximum luminance value of the received transmission video data by including information of a value of said N, and N is greater than 1.
Dependencies are inferred from the claim text.